21980416

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{4519}}^1$

素因数の和:4554

約数の個数: 36

約数和(自身を含む): 46194400

約数和(自身を除く): 24213984

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 608, 1216, 2432, 4519, 4864, 9038, 18076, 36152, 72304, 85861, 144608, 171722, 289216, 343444, 578432, 686888, 1156864, 1373776, 2747552, 5495104, 10990208, 21980416]

約数ペア:

[(1, 21980416), (2, 10990208), (4, 5495104), (8, 2747552), (16, 1373776), (19, 1156864), (32, 686888), (38, 578432), (64, 343444), (76, 289216), (128, 171722), (152, 144608), (256, 85861), (304, 72304), (608, 36152), (1216, 18076), (2432, 9038), (4519, 4864)]